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back to oem exhaust.. CEL wont turn off!!

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Old 06-25-2009 | 02:11 PM
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back to oem exhaust.. CEL wont turn off!!

went back to my stock mazda exhaust, have to do inspection within 2 weeks,

anybody know why my check engine light might stilll be on? sensor should be alright.. do i have to do something to the computer to reset it???
Old 06-25-2009 | 02:19 PM
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you need to clear the CEL. disconnect the battery and wait a few minutes.
Old 06-25-2009 | 02:37 PM
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ill try that.. thanks
Old 06-25-2009 | 02:59 PM
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You could buy cheap OBDII scanner on eBay as well.

Last edited by CarAndDriver; 06-25-2009 at 03:01 PM.
Old 06-25-2009 | 04:19 PM
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It takes a couple drive cycles for the CEL to turn it self off or you can just do the battery thing.
Old 06-25-2009 | 04:44 PM
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Battery!!!
Old 08-11-2009 | 11:30 AM
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ive tried everything and the light doesnt go off.. any ideas? my inspection is over due
Old 08-11-2009 | 12:13 PM
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Originally Posted by italianman1987
ive tried everything and the light doesnt go off.. any ideas? my inspection is over due
give us a cel code please!
Old 08-11-2009 | 12:15 PM
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laythor's Avatar
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the cel might not be related to the exhaust. just because it came on during this time it could be from something else.
Old 08-11-2009 | 12:57 PM
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Find out what the code is, then. It may not be the exhaust. Also, do they fail you if your CEL is on?
Old 08-11-2009 | 01:29 PM
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for sure they dont pass you if cell is on.. how do i find the cell code? do i need an obdII reader?
Old 08-11-2009 | 01:35 PM
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you can do to autozone, oreilly or advanced auto parts and have them scan your code. Yes it is an obd2.
Old 08-11-2009 | 07:38 PM
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^yes......and it's free
Old 08-11-2009 | 07:55 PM
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i have this sameee problem.
i did all you guys said, checked the code which was "P0037 Ho2s Heater Control Circuit low (bank 1 sensor 2)" cleared it... then came back
im also back on my stock cats and exhaust
Old 08-11-2009 | 09:45 PM
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to lazy to read through the other posts... but the battery reset thing no longer works (in tx atleast). If you take your car in for inspections and they read the computer has recently been reset its a fail, atleast it happened with me
Old 08-11-2009 | 09:47 PM
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Originally Posted by jbk
i have this sameee problem.
i did all you guys said, checked the code which was "P0037 Ho2s Heater Control Circuit low (bank 1 sensor 2)" cleared it... then came back
im also back on my stock cats and exhaust
rear o2 sensor
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